| 摘要 |
An reversible adjustable pivot angle square (10) comprising a a base blade (20) that contains a reversible level and plumb means (62) rotatably connected to a perpendicular travel blade (22) that contains a reversible level and plumb means (64) in an arrangement that forms an adjustable orthogonal position. The travel blade (22) design allows rotation to a 360 (three hundred and sixty) degree range. An angle blade (26) is angularly and rotatably connected to the base blade (20) at approximately mid center of the base blade (20) elongation. The base blade (20) design allows rotation to a 360 (three hundred and sixty) degree range. The travel blade (22) contains a through slot which runs substantially along the travel blade (22) elongation. The through slot serves as a travel blade slot (24) for the angle blade (26). Once the angle blade upper end (38) is slidably and adjustably connected to the travel blade slot (24), the adjustable pivot angle square (10) is completely pivotally and rotatably connected. This relationship allows complete angular positioning and movement the connecting of the angle blade to the travel blade by passing a travel slot pin mechanism (34) through the travel blade slot and threadedly couples to a travel lock bolt mechanism (60) by tightening or loosing the travel lock bolt mechanism (60) controls the movement and adjustment of the three blades.
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